Avaya DEFINITY Server CSI Maintenance Manual page 98

Maintenance for CSI systems
Administration
1. At the management terminal, enter change ds1 <location>. The "location"
is the DS1 interface circuit pack for which the loopback jack was installed.
2. Be sure the "near-end CSU type" is set to integrated.
3. Tab to the Supply CPE Loopback Jack Power field and enter y.
4. Enter save translation to save the new information.
DS1 Span Test
This test should only be performed after the DS1 circuit pack and the 120A2 (or
later) ICSU have been successfully tested using appropriate maintenance
procedures. The DS1 span test consists of 2 sequential parts. Each part provides
a result indicating if there is a problem in the CPE wiring. CPE wiring may be
considered problem-free only if the results of both parts are successful.
The first part of the span test powers-up the loopback jack and attempts to send a
simple code from the DS1 board, through the wiring and loopback jack, and back
to the DS1 board. Maintenance software waits about 10 seconds for the loopback
jack to loop, sends the indication of the test results to the management terminal,
and proceeds to the second part of the test.
The second part of the test sends the standard DS1 3-in-24 stress testing pattern
from the DS1 board, through the loopback jack, and back to a bit error detector
and counter on the DS1 board. The bit error rate counter may be examined at will
via the management terminal, and provides the results of the second part of the
test. The test remains in this state until it is terminated so that the CPE wiring may
be bit error rate tested for as long as desired.
1. Busy out the DS1 circuit pack by entering busyout board UUCCSS
(where UUCCSS is the cabinet, carrier, and slot number of the DS1 board).
2. At the management terminal, enter change ds1 <location> and verify the
near-end csu type is set to integrated.
3. Change to page 2 of the DS1 administration screen and confirm that the
TX LBO field is 0dB. If not, record the current value and change it to 0dB
for testing. Press
nothing.
98
Issue 5 October 2002
NOTE:
Setting this field to y informs the technician that a loopback jack is
present on the facility. This allows a technician to determine that the
facility is available for remote testing.
to implement the changes or press
Enter
to change
Cancel
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